Images are from Government photographers assigned to take publicity photos showing the contribution of Bonneville Power Administration to the war effort. Used with permission.

Inside the rear fuse of a B-29 Superfortress on the assembly line
Close up of the B-29 Superfortress with women workers inside the fuselage
showing the pressure tube for the tail gunner to get to his position.
Line of B-29 tail sections under assembly in the Renton plant
Production line showing fuselages with workers at the Boeing Renton
plant in Washington during World War II. Compare the size of these against a similar photo of the B-17 fuselage.
Women workers washing a B-29 wing. Women workers cleaning the wing of a B-29 before next stage. This gives a good idea of the size of a Superfortress.
Workers inside the wing of a B-29 painting it.
Women plant workers inside the wing of a B-29 painting (zinc chromate?)
at Boeing plant showing the size of the wing and how thick the wing is.

Almost completed B-29 about to roll out the factory door.
B-29
final assembled at the Boeing Renton plant awaiting finished touches before
rolling out of the plant to delivery. Tail number 461535 can be read on the nearest aircraft
B-29 Enola Gay at Tinian after the war
Col (later General) Paul Tibbets B-29 'Enola Gay' which he flew to Hiroshima to drop the first Atomic bomb 'Little Boy' at the end of World War II.
Here the Enola Gay heavy bomber is seen parked on Tinian after the war has ended.